non-valid

non--val·id

N n

Definitions of non-valid word

adjective non-valid sound; just; well-founded: a valid reason. 1
adjective non-valid producing the desired result; effective: a valid antidote for gloom. 1
adjective non-valid having force, weight, or cogency; authoritative. 1
adjective non-valid legally sound, effective, or binding; having legal force: a valid contract. 1
adjective non-valid Logic. (of an argument) so constructed that if the premises are jointly asserted, the conclusion cannot be denied without contradiction. 1
adjective non-valid Archaic. robust; well; healthy. 1

before 1565

One of the 32% oldest English words

1565-75; < Latin validus strong, equivalent to val(ēre) to be strong + -idus -id4

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

A common word. It’s meaning is known to most children of preschool age. About 96% of English native speakers know the meaning and use the word.

Most Europeans know this English word. The frequency of it’s usage is somewhere between "mom" and "screwdriver".

believability — to have confidence in the truth, the existence, or the reliability of something, although without absolute proof that one is right in doing so: Only if one believes in something can one act purposefully.
cogency — the quality or condition of being cogent; power to convince
creditability — bringing or deserving credit, honor, reputation, or esteem.
effectiveness — adequate to accomplish a purpose; producing the intended or expected result: effective teaching methods; effective steps toward peace.
genuineness — possessing the claimed or attributed character, quality, or origin; not counterfeit; authentic; real: genuine sympathy; a genuine antique.